Improvement in die-rolling machines



H. WATERS. Die Bolling Machines.

I Patented April 15-, 1873.

INVENTOR WITNESSES- UNITED STATES PATENT FFIOE.

HERVEY WATERS, OF NORTHBRIDGE, MASSACHUSETTS.

IMPROVEMENT IN DIE-ROLLING MACHINES.

Specification forming part of Letters Patent No.137, 94, dated April 15,1873; application filed December 8, 1864.

To all whom "it may concern:

Be it known that I, HERVEY .WATERS, of Northbridge, in the county ofWorcester and State of Massachusetts, have invented an ImprovedRolling-Mill; and I do hereby declare that the following, taken inconnection with the drawings which accompany and form part of thisspecification, is a description of my invention sufficient to enablethose skilled in the art to practice it.

To manufacture scythes and other similar articles, mostly by the use ofrolls instead of ham mers, whereby great saving of labor and materialmay be obtained, is the immediate object of my invention, whilegenerally the object thereof is to enable to be used with greatersafety, accuracy, and facility than ever before that class of rollswhich have intermittent workingsurfaces, in which are modeled pairs ofdies requiring to be matched with considerable certainty while workingtogether in shaping metals.

Prior to the date of my invention, as far as I know, in the use of thiskind of rolls it was practiced to gear one roll directly from the other,or else to drive one or both rolls by means of couplings attached to theend or ends of one or both the rolls, or by other indirect means,subject to considerable yielding of the parts when the rolls weresubmitted to great pressure, whereby the said rolls, although wellmatched when no strain was on them, would, if submitted to anyconsiderable stress, become considerably disarranged in their relationto each other, thereby greatly injuring the dies of the rolls andproducing bad and imperfect work.

By my invention I have succeeded in working die-rolls with such accuracyand certainty as to be able to produce thereby from my compoundscythe-rod four scythe-plates, two in breadth and two in thickness; andalthough said plates have thick and thin parts extendin g throughouttheir entire length, and quite across the plates near their points, Ihave been able to match and use the dies upon the rolls with suchaccuracy as to preserve plane surfaces between the two double plates,the gearing of the rolls working always practically well,notwithstanding considerable variation in the size of the rollsconsequent upon the repairs of the dies.

My invention consists in a peculiar arrangement and construction of arolling-mill made up of bed-piece, housings, rolls, gears, anddriving-shafts, with their fastenings and journalboxes, and, for abetter understanding thereof, reference may be had to Figure l of theaccompanying drawings with the explanations thereof. This figure shows,in perspective, the construction and arrangement of my plating-mill forscythes. A is the bed-piece of the mill, upon which are fixed thehousings of the rolls, the stands I) b constituting the housings of therolls for rolling one end of the scythe-plates, and c c the housings ofthe rolls for rolling the other end of the scythe-plates. d d are thebottom rolls of the mill, each having fixed upon its neck a drivinggear, 0. ff are the top rolls, each also having fixed upon its neck adriving-gear, a, just like those on the bottom rolls; but, unlike thebottom rolls, the driving-gears are made adjustable upon the top rolls,in a manner and for a purpose which will be hereinafter fully explained.g is the primary driving-shaft, having fixed upon it twodriving-pinions, h h, and one connecting-gear, t. j is the secondarydriving-shaft, having fixed upon it two driv ing-pinions, h h, and oneconnecting-gear, i. All the driving-pinions are alike, and each worksinto a driving-gear on a roll. Both the connecting-gears also are alike.That on 9 works into and drives that on j, and, as repre sented in thedrawing, the several journalboxes of the driving-shafts g and j areintegral with the several roller-stands. The journalboxes may, however,be fixed upon the stands with screws. Moreover, the axis of the shaft 9is nearly in the same horizontal plane with the axes of the bottomrolls, and the axis of plane with the axes of the top rolls; but the toprolls are adjustable perpendicularly, and therefore cannot always havetheir axes in exactly the same horizontal plane with the axis of theshaft j, that being fixed. However, considerable adjustment of the toprolls may be made without essentially disturbing the pitch of the gears,because of the large size of the shaft j is nearly in the samehorizontal the driving-gears on the rolls, and the specific location ofthe axis of the driving-pinions, relatively to the location and to theline of adjustment of the axes of the top rolls.

The fastenings of the gears upon the upper rolls, as before stated, aremade adjustable for the purpose of being always able to match the rollsproperly in the direction of their circumference, and the manner which Iprefer to employ is represented in Figs. '2, 3, and 4, Fig. 2 being across-section of the fastening; Fig. 3, a plan of the keys and shimsreduced to a plane; and Fig. 4, a side elevation of the pair of mainkeys.

The neck 70 of the roll has a deep key- .seat, into which is fitted thelargest one of made as desired to the extent of one tooth of thedriving-gear, by changing these shims and side-keys, part or all, fromone side to the other of the main keys when necessary. If a greateradjustment is desired, of course it is done by changing the teeth of thegears.

The key-seat in the nave of the wheel is made larger than the keys, and,as is seen in the drawings, thekeys are tapered conversely, so that eachpair of keys may be driven tight or driven loose at the same end.

When only one set of rolls and housings is used'it will still benecessary to have two driving-shafts, with their connecting-gears,working the two rolls, as before, but at the driving end of the shafts,in place of the other rollerstand, there may be substituted, upon thebedplate, a journal-stand with two bearings prop erly located, as willbe readily seen; and, in-

stead of making the adjustments directly upon and described.

HERVEY WATERS.

Witnesses: I

J. B. ORosBY, FRANCIS GOULD.

